<template>
  <el-menu default-active="1-4-1" class="el-menu-vertical-demo" 
  background-color="#545c64" active-text-color="#ffd04b" text-color="#fff" @open="handleOpen" @close="handleClose"
   :collapse="isCollapse">
    <h3>{{isCollapse ? '后台':'手机销售后台管理系统'}}</h3>
    <el-menu-item @click="clickMenu(item)" v-for="item in noChildren" :index="item.path.toString()" :key="item.path" >
    <i :class="'el-icon-'+item.icon"></i>
    <span slot="title">{{item.label}}</span>
  </el-menu-item>
  <el-submenu v-for="item in hasChildren" :index="'item.path'" :key="item.path">
    <template slot="title">
      <i :class="'el-icon-'+item.icon"></i>
      <span slot="title">{{item.label}}</span>
    </template>
    <el-menu-item-group v-for="(subItem,subIndex) in item.children" :key="subItem.path">
      <el-menu-item @click="clickMenu(subItem)" :index="subIndex.toString()">{{subItem.label}}</el-menu-item>
    </el-menu-item-group>
    
  </el-submenu>
  
</el-menu>
</template>

<style lang="less" scoped>
    .el-menu-vertical-demo:not(.el-menu--collapse) {
      width: 200px;
      min-height: 400px;
    }
    .el-menu{
        height: 100%;
        border: none;
        h3{
            color: #fff;
            text-align: center;
            line-height: 48px;
        }

    }
  </style>
  
  <script>
      

    export default {
     
      data() {
        return {
          // isCollapse:false,
          menu:[
            {
               path:'/home',
               name:'home',
               lable:'首页' ,
               icon:'s-home',
               url:'Home/Home'
            },
            {
               path:'/mall',
               name:'mall',
               lable:'商品管理' ,
               icon:'video-play',
               url:'MallManage/MallManage'
            },
            {
                path:'/user',
               name:'user',
               lable:'用户管理' ,
               icon:'user',
               url:'UserManage/UserManage'  
            },
            {
               lable:'其他',
               icon:'location',
               children:[
                {
                 path:'/page1',
                 name:'page1',
                 lable:'页面1' ,
                 icon:'setting',
                 url:'Other/PageOne'
                },
                {
                 path:'/page2',
                 name:'page2',
                 lable:'页面2' ,
                 icon:'setting',
                 url:'Other/PageTwo'   
                }
               ]
            },

          ]
        };
      },
      methods: {
        handleOpen(key, keyPath) {
          console.log(key, keyPath);
        },
        handleClose(key, keyPath) {
          console.log(key, keyPath);
        },
        clickMenu(item){
             this.$router.push({
                name:item.name
             })
             this.$store.commit('selectMenu',item)
        }
      },
      computed:{
        asyncMenu(){
          return this.$store.state.tab.menu
        },
        noChildren(){
           return this.asyncMenu.filter(item => !item.children)
        },
        hasChildren(){
           return this.asyncMenu.filter(item => item.children)
        },
        isCollapse(){
          return this.$store.state.tab.isCollapse
        },
       
      },    

    }
  </script>